P0158 chevy

P0158 is an OBDII code that occurs in many vehicles, including the Chevy Malibu. The code is triggered when: The voltage at the O2 sensor remains above threshold for 20 seconds or more. Voltage to the sensor is to high (wiring problem, think short) Bad O2 sensor itself. There are also some less likely problems that can cause P0158.

P0158 is an OBDII code that occurs in many vehicles, including the Chevy Trax. The code is triggered when: The voltage at the O2 sensor remains above threshold for 20 seconds or more Voltage to the sensor is to high (wiring problem, think short) Bad O2 sensor itself There are also some less likely problemsCodes P0056,P014A,P0158,P0161 5th Gen Camaro SS LS LT General Discussions Codes P0056,P014A,P0158,P0161 - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums - Camaro5.com You are browsing camaro5P2273 is a generic trouble code that indicates a possible problem with the oxygen sensor’s signal. Code P2273 is set once the signal that’s sent by the oxygen sensor is stuck rich. This usually means that there’s inadequate air in the exhaust. The oxygen sensor signal is designed to fluctuate within a given voltage range.What Does the Engine Code P0158 Mean? Character "P" in the first position of Diagnostic Trouble Code (DTC) represents the powertrain system (engine and transmission), "0" in the second position means that this is a generic OBD-II (OBD2) DTC. "1" in the third character position in a DTC indicates that the fuel and air metering and auxiliary emission controls …What Does Code P0158 Mean? Symptoms of Code P0158; Causes of Code P0158; Is Code P0158 Serious? How to Fix #1 – Use Symptoms to Pinpoint the Problem …Mar 18, 2019 · P0158 is an OBDII code that occurs in many vehicles, including the Chevy Tahoe. The code is triggered when: The voltage at the O2 sensor remains above threshold for 20 seconds or more. Voltage to the sensor is to high (wiring problem, think short) Bad O2 sensor itself. There are also some less likely problems that can cause P0158. 11 May 2020 ... Código P0158 — Solución, Causas y Sintoma ... How to Fix P0158 Engine Code ... Easy Chevy Silverado GMC Sierra Evap Emission Code P0446 Fix For Free.

P0158 Code Causes #1: Bad O2 Sensor. The first and most common cause for this problem with the P0158 code is a bad O2 sensor. O2 sensors can fail internally and simply start to develop issues like in this case with the high voltage. Having a failed sensor shouldn’t surprise you.P0158 is an OBDII code that occurs in many vehicles, including the Chevy Malibu. The code is triggered when: The voltage at the O2 sensor remains above threshold for 20 seconds or more. Voltage to the sensor is to high (wiring problem, think short) Bad O2 sensor itself. There are also some less likely problems that can cause P0158.Meet the Experts. I have a code p0758 and my truck went into limp mode. Its a 00 s10 4.3 auto. I changed the shift solenoid, changed the - Answered by a verified Chevy Mechanic.Subject: MIL illumination with fault code P0056, P0060, P013C, P013D, P014A, P014B, P0157, P0158, P0160, P0161, P0430, P2272 or P2273 might be caused by damaged oxygen sensor wiring. As routed from the factory, the pigtail for Bank 2, oxygen sensor 2 might chafe against the top of the frame rail. If chaffing is discovered, the bulletin ...Audi 90 Quattro. $319 - $544. INFINITI QX56. $354 - $375. Cadillac Escalade ESV. $218 - $245. A Chevrolet Silverado 1500 Oxygen Sensor Replacement costs between $284 and $319 on average. Get a free detailed estimate for a repair in your area.

Denso Oxygen Sensor 234-4256 Downstreamhttps://amzn.to/2Y5xIwgCode Readerhttps://amzn.to/3GzCnb9Code P2273 - Stuck Rich Bank 2 Sensor 2Code P0158 - High Volt...16 Apr 2024 ... Chevrolet · Dodge · Ford · GMC · Honda · Hyundai · Jeep · Nissan · Toyota · All Makes ... P0158 Code:...Got 2011 Chevy 2500HD Silverado-LTZ-with 6.0 LS gas engine -got bunch of trouble codes all for both rear O2 sensors-codes p0036-p0138-p013E-p0140-p0141-p014A-p0158-p0160—went thru connections all wiring good-did continuity and voltage test (used rc car battery with 11.33 volts)-battery discounted while test wiring-no breaks—next went and ...Jan 7, 2023 · The P0138 DTC is a generic trouble code that says the oxygen sensor circuit (Bank 1, Sensor 2) is exhibiting higher voltage than normal. The Powertrain Control Module (PCM) detects that the voltage coming from the sensor is higher than what the manufacturer specs illustrate. This heated oxygen sensor is found at the back of the catalytic converter.

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6.Get a Replacement O2 Sensor That Fits Your Car. The P0157 code refers to a potential problem with the #2 sensor on Bank 2 or its circuit. This code applies to the downstream oxygen sensor located right behind the catalytic converter. If your OBD-II scanner registers this code, you can either let your mechanic handle it or address the issue ...Mar 24, 2022 · P0156 definition: Oxygen Sensor Circuit Malfunction (Bank 2, Sensor 2) Issue Severity: MODERATE– Extended driving with this code can cause internal engine damage. Repair Urgency: Get this code fixed as soon as possible. Diagnosis: It is important to complete the entire diagnostic process when diagnosing the P0156 code. P0158 is an OBDII code that occurs in many vehicles, including the Chevy Impala. The code is triggered when: The voltage at the O2 sensor remains above threshold for 20 seconds or more. Voltage to the sensor is to high (wiring problem, think short) Bad O2 sensor itself. There are also some less likely problems that can cause P0158.Feb 7, 2019 · P0138 is a common OBDII code that occurs in many vehicles, including the Chevy Silverado. The code is triggered when: The voltage at the sensor remains above threshold for 20 seconds or more. Voltage to the sensor is to high (wiring problem, think short) Bad O2 sensor itself. There are also some less likely problems that can cause P0138. What causes the P0158 code? Failed rear oxygen sensor; Failed rear oxygen sensor heater circuit ; Engine coolant temperature sensor bad; Shorts, breaks, or exposed oxygen sensor wiring; Excessive fuel pressure; Necessary power control module (PCM) update; Failure of the power control module (PCM) What are the symptoms of the P0158 code?

2011-2016 Cruze 1.4 PCV Valve Cover/Intake Manifold Issues. Potential causes for this code, P0106, to set are: Defective O2 sensor (s) Burnt, broken, or disconnected wiring and/or connectors. Defective catalytic converter. Engine exhaust leaks. Read more at: P015B O2 Sensor Delayed Response - Lean to Rich (Bank 1 Sensor 1) A code P0171 may mean ...P0152 trouble code definition. O2 Sensor Circuit High Voltage (Bank 2 Sensor 1) What the P0152 code means. P0152 is the OBD-II generic code indicating that the O2 sensor for bank 2 sensor 1 fails to have a lower voltage output below 1.2 volts for more than 10 seconds indicating a lack of oxygen in the exhaust stream or a short to power in the …5strmtrp said: specifics: 2014 SSV Tahoe 106,000. P0158 bank 2 sensor 2. I’m ASsumming this is the post cat O2 sensor on the PASsenger side of the vehicle? Had a issue with a shot battery, new one in place have driven the truck about 100 miles since the new battery was put in. Need for this truck to pass inspection and now it throws this code.The P0132 code indicates that there is a high voltage issue on your Oxygen sensor or Bank 1. This code occurs when the powertrain control module (PCM) detects that the oxygen sensor’s voltage reading is too high. In some cases, the code sets because the isn’t responding quickly enough to adjust for the air-fuel mixture in the combustion ...P2273 is a generic trouble code that indicates a possible problem with the oxygen sensor’s signal. Code P2273 is set once the signal that’s sent by the oxygen sensor is stuck rich. This usually means that there’s inadequate air in the exhaust. The oxygen sensor signal is designed to fluctuate within a given voltage range.P0158 is an OBDII code that occurs in many vehicles, including the Chevy Cobalt. The code is triggered when: The voltage at the O2 sensor remains above threshold for 20 seconds or more; Voltage to the sensor is to high (wiring problem, think short) Bad O2 sensor itself; There are also some less likely problems that can cause P0158.October 19, 2023 by Jason. P0455 in the Chevy Silverado is a trouble code that indicates your truck has a LARGE evaporative emissions leak. This code indicates that there is a large leak in the evaporative emission control system and can cause issues such as decreased fuel efficiency, rough idling, and increased emissions.The trucks and SUVs made by Chevrolet and GMC are almost identical. GMC vehicles, however, cost more than Chevrolet vehicles because General Motors markets GMC vehicles as more pro...

P0158 is an OBDII code that occurs in many vehicles, including the Chevy Malibu. The code is triggered when: The voltage at the O2 sensor remains above threshold for 20 seconds or more. Voltage to the sensor is to high (wiring problem, think short) Bad O2 sensor itself. There are also some less likely problems that can cause P0158.

If the oxygen in the exhaust gas increases, the air-fuel ratio becomes Lean. The ECM interprets Lean when the HO2S voltage is below 0.45 V. If the oxygen in the exhaust gas decreases, the air-fuel ratio becomes Rich. The ECM interprets Rich when the HO2S voltage is above 0.45 V. P0158 Ford Code - O2 Sensor Circuit High Voltage Bank 2 …Today we're going over the steps on how to locate, test and replace an oxygen sensor. Specifically, we're dealing with sensor 2, which is located after the c...The P0138 DTC is a generic trouble code that says the oxygen sensor circuit (Bank 1, Sensor 2) is exhibiting higher voltage than normal. The Powertrain Control Module (PCM) detects that the voltage coming from the sensor is higher than what the manufacturer specs illustrate. This heated oxygen sensor is found at the back of the catalytic converter.The P0157 sensor in a Chevy Silverado is responsible for monitoring the oxygen levels in the exhaust system. Replacing the P0157 sensor can be beneficial in some cases, but it also has some drawbacks. Knowing the pros and cons of replacing this sensor can help you decide if it is the right course of action for your vehicle.Jan 29, 2023 · DTC P0158 Overview: O2 Sensor Circuit High Voltage (Bank 2, Sensor 2) #CheckEngineLight#DTCP0158#RustyDiyGarage#LetUsLearnTogether A P0158 code means that the voltage was higher than normal on the signal circuit. NOTE: A post-catalyst o2 sensor will normally switch slower and fewer times than front (pre-cat) o2 sensors. Symptoms of a P0158 DTC may include: MIL (Malfunction Indicator Lamp) on. Engine loses power and misses intermittently. May exhibit loss of fuel efficiency.Hi Im David, P0161 CHEVROLET - HO2S Heater Performance Bank 2 Sensor 2 Possible causes - Faulty Rear Heated Oxygen Sensor Bank 2 - Rear Heated Oxygen Sensor Bank 2 harness is open or shorted - Rear Heated Oxygen Sensor Bank 2 circuit poor electrical connection - Inappropriate fuel pressure - Faulty fuel injectors - Intake air leaks - Exhaust gas leaks P0158 CHEVROLET - HO2S Circuit High ...Te suministramos todo lo que necesitas saber sobre el código DTC P0158 Descripción, causas, síntomas y posibles soluciones. LEER SOLUCIÓN DEL CÓDIGO O...The OBD-II fault code P0158 means that the rear Oxygen Sensor voltage remained above 450 millivolts for more than two minutes, indicating high levels of oxyg...18 Jan 2024 ... Remember Me? Password. BeckyD @ James Martin Chevy ... Engine light, Heated Oxygen Sensor (HO2S) high voltage. The diagnostic is: Code P0158

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14 Dec 2019 ... ... chevy truck this video is for you. I will be showing you a few things you should check before replacing the oxygen sensor in your Chevy ...The Chevy 6.0 liter small block engine is an eight-cylinder engine aligned in the V formation and is called the Vortec L96. As of 2015, it is used primarily in Chevy’s heavy-duty t...Labor: 1.0. To diagnose the P0158 2014 Chevrolet Silverado code, it typically requires 1.0 hour of labor. The specific diagnosis time and labor rates at auto repair shops can differ based on factors such as the location, make and model of the vehicle, and even the engine type. It is common for most auto repair shops to charge between $75 …P0158 Causes. Faulty O2 Sensor; Short to battery voltage in O2 sensor signal circuit; Corroded wiring; Fuel pressure too high; Engine coolant temperature sensor; P0158 Symptoms. Check Engine Light; Engine runs rich; Lower fuel economy; Rough idle; Strong fumes; How Do I Fix Code P0158?October 19, 2023 by Jason. P0455 in the Chevy Silverado is a trouble code that indicates your truck has a LARGE evaporative emissions leak. This code indicates that there is a large leak in the evaporative emission control system and can cause issues such as decreased fuel efficiency, rough idling, and increased emissions.May 28, 2022 · To diagnose the P2273 Chevrolet code, it typically requires 1.0 hour of labor. The specific diagnosis time and labor rates at auto repair shops can differ based on factors such as the location, make and model of the vehicle, and even the engine type. It is common for most auto repair shops to charge between $75 and $150 per hour. Mar 23, 2024 · The code is set when the sensor is taking too long to warm up. Water getting inside the heated oxygen sensor connector can cause the heated oxygen sensor fuse to blow. Before replacing the sensor, check for the condition of the heated oxygen sensor fuse and connectors. If the fuse and connector are OK, replacing the O2 Sensor usually takes care ... Summary. The P0152 code stands for “O2 Sensor Circuit High Voltage (Bank 2, Sensor 1),” which typically means the pre-catalytic converter oxygen (O2) sensor’s voltage signal has been out of the set range for longer than a specified amount of time. Some possible causes of the P0152 code include a faulty O2 sensor, malfunctioning wiring or ...P0030 Chevrolet Code - HO2S Heater Control Circuit Bank 1 Sensor 1. How to Fix. Check the 'Possible Causes' listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector pins.17 Mar 2023 ... ... Chevy 350 bank 1 would be driver side (see attached photo) usually ... Kia Sedona P0158: Oxygen Sensor High Voltage (Bank 2 -Sensor 2) | ... A P0158 code is not typically serious. It simply means that there is a problem in the bank 2, sensor 2 circuit and the power control module (PCM) has stored a code for future reference. There are little to no adverse effects on vehicle performance when this trouble code is present. In some cases, it can be indicative of an ongoing or soon-to-be ... What causes the P0154 code? Vacuum leaks. Bad oxygen sensor bank 2 sensor 1. Holes in the exhaust, or air leaks in the intake. Broken wires or bare wires leading to the 02 oxygen sensor. Wiring to the sensor rubbing on exhaust components. Oil and water in the oxygen sensor connector. Oil or coolant in the exhaust system fouling out the oxygen ... ….

Vehículos comunes de diferentes marcas y modelos que pueden experimentar el DTC P0158 incluyen fabricantes como Ford, Chevrolet, Toyota, Honda y BMW. Sin embargo, es importante tener en cuenta que la aparición del DTC P0158 puede ser influenciada por varios factores como la edad y kilometraje del vehículo, las condiciones de conducción y …To diagnose the P2273 Chevrolet code, it typically requires 1.0 hour of labor. The specific diagnosis time and labor rates at auto repair shops can differ based on factors such as the location, make and model of the vehicle, and even the engine type. It is common for most auto repair shops to charge between $75 and $150 per hour.A P0158 code means that the voltage was higher than normal on the signal circuit. NOTE: A post-catalyst o2 sensor will normally switch slower and fewer times than front (pre-cat) o2 sensors. Symptoms of a P0158 DTC may include: MIL (Malfunction Indicator Lamp) on. Engine loses power and misses intermittently. May exhibit loss of fuel efficiency.Replacing speakers in a vehicle is one of the simplest and most cost-effective ways of improving the sound in your car. The Chevrolet Colorado is a good candidate for speaker repla...P0140 P0138 Code Chevy Truck, If you have a P0140 or a P0138 code in your chevy truck this video is for you. I will be showing you a few things you should ch...P0158 is an OBDII code that occurs in many vehicles, including the Chevy Tahoe. The code is triggered when: The voltage at the O2 sensor remains above threshold for 20 seconds or more. Voltage to the sensor is to high (wiring problem, think short) Bad O2 sensor itself. There are also some less likely problems that can cause P0158.The P0132 code indicates that there is a high voltage issue on your Oxygen sensor or Bank 1. This code occurs when the powertrain control module (PCM) detects that the oxygen sensor’s voltage reading is too high. In some cases, the code sets because the isn’t responding quickly enough to adjust for the air-fuel mixture in the combustion ...Dec 14, 2019 · P0140 P0138 Code Chevy Truck, If you have a P0140 or a P0138 code in your chevy truck this video is for you. I will be showing you a few things you should ch... P0158 chevy, What Does Code P0158 Mean? The internal combustion engine ignites a hydrocarbon (HC) fuel, combining it with oxygen (O2), using the resulting energy output to turn the engine. The exhaust stream, ideally, is composed simply of water (H2O), carbon dioxide (CO2), and unreacted nitrogen (N2)., OBD2 Diagnostic Trouble Code P0158 means that O2 Sensor Circuit High Voltage (Bank 2 Sensor 2) has been detected. Carly Universal Scanner. iOS and Android enabled. All …, P0161 is a very common OBDII code that occurs in the Chevy Silverado. It is typically caused by a failure in one of the elements that heat the oxygen sensors, specifically bank 2 sensor 2. Replacing the Oxygen sensor will fix the problem a majority of the time. Some of the other causes of P0161., What causes the P0154 code? Vacuum leaks. Bad oxygen sensor bank 2 sensor 1. Holes in the exhaust, or air leaks in the intake. Broken wires or bare wires leading to the 02 oxygen sensor. Wiring to the sensor rubbing on exhaust components. Oil and water in the oxygen sensor connector. Oil or coolant in the exhaust system fouling out the oxygen ..., Mar 23, 2024 · The code is set when the sensor is taking too long to warm up. Water getting inside the heated oxygen sensor connector can cause the heated oxygen sensor fuse to blow. Before replacing the sensor, check for the condition of the heated oxygen sensor fuse and connectors. If the fuse and connector are OK, replacing the O2 Sensor usually takes care ... , P0156 definition: Oxygen Sensor Circuit Malfunction (Bank 2, Sensor 2) Issue Severity: MODERATE– Extended driving with this code can cause internal engine damage. Repair Urgency: Get this code fixed as soon as possible. Diagnosis: It is important to complete the entire diagnostic process when diagnosing the P0156 code., =====Claim your FREE engine code eraser 👉 https://free.nonda.co 👈=====Engine Code P0160 Saving Repair Parts..., Mar 18, 2019 · P0158 is an OBDII code that occurs in many vehicles, including the Chevy Avalanche. The code is triggered when: The voltage at the O2 sensor remains above threshold for 20 seconds or more; Voltage to the sensor is to high (wiring problem, think short) Bad O2 sensor itself; There are also some less likely problems that can cause P0158. , Labor: 1.0. To diagnose the P0158 2014 Chevrolet Silverado code, it typically requires 1.0 hour of labor. The specific diagnosis time and labor rates at auto repair shops can differ based on factors such as the location, make and model of the vehicle, and even the engine type. It is common for most auto repair shops to charge between $75 …, 19 Sept 2019 ... ... P0158, P0160, P0161, P0171, P0174, P0420, P0430, P1174, P1175, P2096 ... 2024 Chevrolet Traverse First Drive: 3-Row SUV Gets Broader Appeal ..., The code is set when the sensor is taking too long to warm up. Water getting inside the heated oxygen sensor connector can cause the heated oxygen sensor fuse to blow. Before replacing the sensor, check for the condition of the heated oxygen sensor fuse and connectors. If the fuse and connector are OK, replacing the O2 Sensor usually takes care ..., P0140 P0138 Code Chevy Truck, If you have a P0140 or a P0138 code in your chevy truck this video is for you. I will be showing you a few things you should ch..., HO2S Heater Control Circuit (Bank 2 Sensor 1) Power Train Code: P0059. (HO2S) Heater Resistance (Bank 2 Sensor 1) Power Train Code: P0154. 02 Sensor Circuit No Activity Detected (Bank 2 Sensor 1) Power Train Code: P0155. (HO2SHTR21) Heater Circuit Malfunction. Power Train Code: P1175. UNKNOWN - refer to manufacturer's …, Buy Now!New O2 Oxygen Sensor with Install Tool from 1AAuto.com http://1aau.to/ia/1AEEK005211A Auto shows you how to remove, install, change or replace an oxy..., P0158 is an OBDII code that occurs in many vehicles, including the Chevy Malibu. The code is triggered when: The voltage at the O2 sensor remains above threshold for 20 seconds or more. Voltage to the sensor is to high (wiring problem, think short) Bad O2 sensor itself. There are also some less likely problems that can cause P0158., This will be different on a Chevy or Dodge than on a Ford. But even on transverse (sideways) engines, the same rule applies, so make sure you’re working on the proper O2 sensor before you start. The O2 sensor on bank 2, position 2 monitors the catalyst efficiency of the catalytic converter on that bank., Posts. 365. Reaction score. 384. specifics: 2014 SSV Tahoe 106,000. P0158 bank 2 sensor 2. I’m ASsumming this is the post cat O2 sensor on the PASsenger side …, The first and most common cause for this problem with the P0158 code is a bad O2 sensor. O2 sensors can fail internally and simply start to develop issues like in …, Got 2011 Chevy 2500HD Silverado-LTZ-with 6.0 LS gas engine-got bunch of trouble codes all for both rear O2 sensors-codes p0036-p0138-p013E-p0140-p0141-p014A-p0158-p0160—went thru connections all wirin …, 25 Oct 2019 ... Here's how to fix an oxygen sensor on the Chevy Captiva. I show you how to replace an O2 Sensor on the Chevy Captiva, but this may be ..., What Does the P0160 Chevrolet Code Mean? The Powertrain Control Module ( PCM) supplies a voltage of about 450 mV between the HO2S high and low signal circuits. The oxygen sensor varies the voltage over a range from about 1,000 mV when the exhaust is rich, down through about 10 mV when the exhaust is lean. The PCM monitors and …, A P0158 code means that the voltage was higher than normal on the signal circuit. NOTE: A post-catalyst o2 sensor will normally switch slower and fewer times than front (pre-cat) …, P0158 is an OBDII code that occurs in many vehicles, including the Chevy Equinox. The code is triggered when: The voltage at the O2 sensor remains above threshold for 20 seconds or more. Voltage to the sensor is to high (wiring problem, think short) Bad O2 sensor itself. There are also some less likely problems that can cause P0158., P0158 is an OBDII code that occurs in many vehicles, including the Chevy Camaro. The code is triggered when: The voltage at the O2 sensor remains above threshold for 20 seconds or more. Voltage to the sensor is to high (wiring problem, think short) Bad O2 sensor itself. There are also some less likely problems that can cause P0158., What Does the Engine Code P0158 Mean? Character "P" in the first position of Diagnostic Trouble Code (DTC) represents the powertrain system (engine and transmission), "0" in the second position means that this is a generic OBD-II (OBD2) DTC. "1" in the third character position in a DTC indicates that the fuel and air metering and auxiliary emission controls …, P0158 is an OBDII code that occurs in many vehicles, including the Chevy Malibu. The code is triggered when: The voltage at the O2 sensor remains above threshold for 20 seconds or more. Voltage to the sensor is to high (wiring problem, think short) Bad O2 sensor itself. There are also some less likely problems that can cause P0158., Chevy Cobalt P0158 Causes. Here are the most common issues that cause the P0158 code in the Chevy Cobalt. They are presented in order (somewhat) of most to least likely to cause the problem. Bad Oxygen Sensor– The O2 sensor itself is one of the most likely reasons that P0158 is triggering your service engine soon light. Although it is …, P0158 Code Causes #1: Bad O2 Sensor. The first and most common cause for this problem with the P0158 code is a bad O2 sensor. O2 sensors can fail internally and simply start to develop issues like in this case with the high voltage. Having a failed sensor shouldn’t surprise you., Chevy Silverado P0158 Causes. Here are the most common issues that cause the P0158 code in the Chevy Silverado. They are presented in order (somewhat) of most to least likely to cause the problem. Bad Oxygen Sensor– The O2 sensor itself is one of the most likely reasons that P0158 is triggering your service engine soon light. …, To diagnose the P2273 Chevrolet code, it typically requires 1.0 hour of labor. The specific diagnosis time and labor rates at auto repair shops can differ based on factors such as the location, make and model of the vehicle, and even the engine type. It is common for most auto repair shops to charge between $75 and $150 per hour., Chevy Silverado P0137: O2 Sensor Low Voltage (Bank 1 -Sensor 2) P0137 is a fairly common OBDII code that occurs in the Chevy Silverado, it’s a general code. This means that it has the same meaning for any vehicle. This code is supposed to let you know that there is an issue with the wiring or harness going to the sensor, or the sensor itself ..., What Does the Engine Code P0158 Mean? Character "P" in the first position of Diagnostic Trouble Code (DTC) represents the powertrain system (engine and transmission), "0" in the second position means that this is a generic OBD-II (OBD2) DTC. "1" in the third character position in a DTC indicates that the fuel and air metering and auxiliary emission controls …, Getting same codes: P0138 and P0158 as well as P013A and P013C. Engine running good. No misfiring. O2 Sensor. Mechanic's Assistant: I understand that you have replaced the downstream sensors and are still experiencing the same trouble codes, but the Chevy Mechanic will be able to help you diagnose and resolve this issue. Have …